An experimental study of salt/heat transport in a fracture-matrix system based on the resistivity method

DING Rui; DENG Yaping; QIAN Jiazhong; YANG Ze; MA Lei

doi:10.16030/j.cnki.issn.1000-3665.202111055

2023 Vol. 50, No. 1

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DING Rui, DENG Yaping, QIAN Jiazhong, YANG Ze, MA Lei. An experimental study of salt/heat transport in a fracture-matrix system based on the resistivity method[J]. Hydrogeology & Engineering Geology, 2023, 50(1): 51-59. doi: 10.16030/j.cnki.issn.1000-3665.202111055

Citation:

DING Rui, DENG Yaping, QIAN Jiazhong, YANG Ze, MA Lei. An experimental study of salt/heat transport in a fracture-matrix system based on the resistivity method[J]. Hydrogeology & Engineering Geology, 2023, 50(1): 51-59. doi: 10.16030/j.cnki.issn.1000-3665.202111055

An experimental study of salt/heat transport in a fracture-matrix system based on the resistivity method

School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, Anhui　230009, China

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Corresponding author: QIAN Jiazhong, qianjiazhong@hfut.edu.cn

Received Date: 19 November 2021

Revised Date: 07 January 2022

Publish Date: 15 January 2023

Abstract

Abstract

In order to explore the effectiveness of salt and heat tracers in a fracture-matrix system, a fracture-matrix test model is designed. The tracer tests with different tracers are carried out. The transport process of tracer is described in the fracture-matrix with the real-time dynamic resistivity monitoring data at different measuring points, and the effectiveness of salt and heat tracers based on the resistivity method is discussed. The results show that the process of injecting three different tracers into the fracture-matrix system and the existence of fracture can be seen by the resistivity method. Under the salt-heat tracer, the difference between the volume conductivity in the fracture and the matrix is the largest, and the change rate of the volume conductivity in the fracture and the matrix decreases with the increasing depth. The fitting effect of concentration and volume conductivity is better than that of temperature and volume conductivity. These indicate that the tracer based on the resistivity method is effective in describing the positions of the fracture and matrix in the fracture-matrix system, and the salt-heat combined tracer has the best effect. The results are of certain reference for the field electrical exploration of the positions of fractures and other heterogeneous layers.
- fracture-matrix system /
- salt heat tracer /
- tracer test /
- resistivity method

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References

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